Cisco ACI Cookbook

Book Image

Cisco ACI Cookbook

By : Stuart Fordham

Book Image

Cisco ACI Cookbook

By: Stuart Fordham

Overview of this book

Cisco Application Centric Infrastructure (ACI) is a tough architecture that automates IT tasks and accelerates data-center application deployments. This book focuses on practical recipes to help you quickly build, manage, and customize hybrid environment for your organization using Cisco ACI. You will begin by understanding the Cisco ACI architecture and its major components. You will then configure Cisco ACI policies and tenants. Next you will connect to hypervisors and other third-party devices. Moving on, you will configure routing to external networks and within ACI tenants and also learn to secure ACI through RBAC. Furthermore, you will understand how to set up quality of service and network programming with REST, XML, Python and so on. Finally you will learn to monitor and troubleshoot ACI in the event of any issues that arise. By the end of the book, you will gain have mastered automating your IT tasks and accelerating the deployment of your applications.

Title Page

Credits

About the Author

About the Author

About the Reviewers

About the Reviewers

www.PacktPub.com

www.PacktPub.com

Customer Feedback

Customer Feedback

Preface

Free Chapter

Understanding Components and the ACI Fabric

Understanding Components and the ACI Fabric

Understanding ACI and the APIC

An overview of the ACI fabric

Converting Cisco from Nexus NX-OS mode to ACI mode

ACI fabric overlay

An introduction to the GUI

Configuring Policies and Tenants

Configuring Policies and Tenants

Creating fabric policies

Creating access policies

Creating tenants

Configuring bridge domains

Configuring contexts

Creating application network profiles

Creating endpoint groups

Using contracts between tenants

Creating filters

Creating contracts within tenants

Creating management contracts

Hypervisor Integration (and Other Third Parties)

Hypervisor Integration (and Other Third Parties)

Installing device packages

Creating VMM domains and integrating VMWare

Associating vCenter domains with a tenant

Deploying the AVS

Discovering VMWare endpoints

Adding virtual machines to a tenant

Tracking ACI endpoints

Integrating with A10

Deploying the ASAv

Integrating with OpenStack

Integrating with F5

Integrating with Citrix NetScaler

Routing in ACI

Creating a DHCP relay

Routing with BGP

Configuring a layer-3 outside interface for tenant networks

Associating a bridge domain with an external network

Using route reflectors

Routing with OSPF

Routing with EIGRP

Using IPv6 within ACI

Setting up multicast for ACI tenants

Configuring multicast on the bridge domain and interfaces

ACI transit routing and route peering

ACI Security

Creating local users

Creating security domains

Limiting users to tenants

Connecting to a RADIUS server

Connecting to an LDAP server

Connecting to a TACACS+ server

Implementing Quality of Service in ACI

Implementing Quality of Service in ACI

Preserving existing CoS settings

Configuring user-defined classes

Creating a basic QoS configuration

Network Programmability with ACI

Network Programmability with ACI

Browsing the object store using the Object Store Browser

Programming the ACI through REST

Authenticating through REST and XML

Creating a tenant using REST and XML

Deleting a tenant using REST and XML

Creating an APN and an EPG using REST and XML

Creating an application profile and EPG using REST

Authenticating through REST and JSON

Creating a tenant using REST and JSON

Using the Python SDK

Logging into the APIC using Cobra

Creating a tenant using the SDK

Monitoring ACI

Navigating the audit logs

Setting up Call Home

Configuring SNMP

Configuring Syslog

Configuring NetFlow

Troubleshooting ACI

Troubleshooting ACI

Layer 2 troubleshooting

FEX troubleshooting

SSL troubleshooting

Switch diagnostics

APIC troubleshooting

Upgrading the ACI software

VMM troubleshooting

Routing verifications

Troubleshooting external connectivity

Multicast troubleshooting

QoS troubleshooting

An End-to-End Example Using the NX-OS CLI

An End-to-End Example Using the NX-OS CLI

Setting up in-band and out-of-band access to the nodes

Creating the security domain

Creating the VLAN domain

Creating the VMWare domain

Creating the tenant

Creating the VRF

Creating the bridge domains

Creating the applications and EPGs

Creating the contract

Creating an L4-L7 device

Creating service templates

Setting up the client VMs

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Verifying QoS

We can turn to the CLI to verify the QoS settings.

How to do it...

We can use the show run tenant TenantA command to list all of the configurations for a tenant (TenantA in this example). This can result in a lot of configurations being returned, so we can limit it down to be more precise in what we are looking for. We can reduce the scope down to an application profile, using the show run tenant TenantA application TenantA_AP1 command to display the TenantA_AP1 application profile and all of the EPGs defined within it. If we want to look at one particular EPG, we would add epg TenantA_EPG1 to the end of the command. From the CLI, run the following command to see what QoS policy is assigned to the tenant:

      apic1# sh run tenant TenantA application TenantA_AP1 epg TenantA_EPG1
      # Command: show running-config tenant 
      TenantA application TenantA_AP1 epg TenantA_EPG1
      tenant TenantA
        application TenantA_AP1
           epg TenantA_EPG1
            bridge...